Parallel Volume Damper Low Leak 3000PLL-42X14 Step Down Ceiling Diffuser Standard Features * Individually adjustable

Standard Features * Individually adjustable steel curved blades * Lever operated steel multi-shutter damper * Pivoted steel blades for easy firm positioning * All component parts

Perforated face grille

904 - Double Deflection Adjustable Aluminum Blade Grille For a 22" x 18" Duct Opening (front blades parallel to shortest dimension)

1x1 T-Bar (10" x 10" duct)

Designed for large volume air delivery

Parallel Volume Damper Low Leak 3000PLL-42X14 Step Down Ceiling Diffuser Standard Features * Individually adjustableh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control